OK, let's crack this. We're given 446 and our task is to multiply it by 31. Essentially, we'll be adding 446 to itself 31 times.
Step 1: 0 + 446 = 446
Step 2: 446 + 446 = 892
Step 3: 892 + 446 = 1338
Step 4: 1338 + 446 = 1784
Step 5: 1784 + 446 = 2230
Step 6: 2230 + 446 = 2676
Step 7: 2676 + 446 = 3122
Step 8: 3122 + 446 = 3568
Step 9: 3568 + 446 = 4014
Step 10: 4014 + 446 = 4460
Step 11: 4460 + 446 = 4906
Step 12: 4906 + 446 = 5352
Step 13: 5352 + 446 = 5798
Step 14: 5798 + 446 = 6244
Step 15: 6244 + 446 = 6690
Step 16: 6690 + 446 = 7136
Step 17: 7136 + 446 = 7582
Step 18: 7582 + 446 = 8028
Step 19: 8028 + 446 = 8474
Step 20: 8474 + 446 = 8920
Step 21: 8920 + 446 = 9366
Step 22: 9366 + 446 = 9812
Step 23: 9812 + 446 = 10258
Step 24: 10258 + 446 = 10704
Step 25: 10704 + 446 = 11150
Step 26: 11150 + 446 = 11596
Step 27: 11596 + 446 = 12042
Step 28: 12042 + 446 = 12488
Step 29: 12488 + 446 = 12934
Step 30: 12934 + 446 = 13380
Step 31: 13380 + 446 = 13826

So, 446*31 = 13826